<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        
    </style>
</head>
<body>
    <form action="#" onsubmit="return false;">
        <label for="username">用户名：</label><input type="text" name="username" id="username" required>
        <label for="pwd">密码：</label><input type="password" name="password" id="pwd" required>
        <label for="email">邮箱：</label><input type="email" name="email" id="email">
        <br>
        <button type="submit">提交</button>
    </form>
</body>
</html>